Geoege h



(No Model.)

G. H. CORLISS. Pump.

No. 235,742. Pakented Dec. 21,1880.

1 N-PETEKU. PHOYWUTNOGflAPMER. WASHINGTON- D G.

NiTEn STATES PATENT 'FFICE.

GEORGE H. OOBLISS, OF PROVIDENCE, RHODE ISLAND.

PUMP.

SPECIFICATION formingpart of Letters Patent No. 235,742, dated December21, 1880.

Application filed June 14, 1880. (N0 model.)

To all whom in? may concern.-

Be it known that I, GEORGE H. OoRLIss, a citizen of the United States,residing at Provi' dence,in the county of Providence, in the State ofRhode Island, have invented certain new and useful Improvements inPumps, of which the following is a full and exact description.

The'invention is intended mainly for large pumps, and relates to thevalves and adjacent parts.

I employ a ring of relatively thin metal for the valve, of such size asto extend quite around the body of the pump. I can use this valve withmy peculiar guiding and operating means for theinduction alone orfor theeduction alone; but I can use the fullest form of the invention for theeduction and a less complete development of the invention for theinduction, or vice versa, thus using the invention in one or both placesin the same pump, and will so describeit.

But that my invention may be fully understood, I will proceed todescribe by the aid of the accompanying drawings, which form part ofthis specification, the means which I prefer toemploy in carrying outthe various details of my invention.

Figure l is a central vertical section through a portion of the pump,and Fig. 2 is a horizontal section through the same parts.

Similar letters of reference indicate like parts in both the figures.

The drawings represent the novel parts with so much of the ordinaryparts as will show their relation thereto.

M is the case or main body of the pump. S is a plunger worked up anddown through a stuffing-box around the top, and M M are respectively thehorizontal plates in which are the apertures to be controlled by valves.The water, it will be understood, is received through liberal pipes, thesuction or receiving pipe being connected to the nozzle m and theforeing or delivery pipe being connected to the nozzle m The aperturesfor the flow of the water up through the plates M and M are alike. Eachis an annular aperture extending continuously around. I will indicateeach by m The metal is strongly supported by webs M below, cast inone'therewith. The upper and lower edges of the webs are sharpened.

The casting M above the uppermost or delivery, which I have termed theeduction aperture, is also formed with webs across, marked with similarmarks M Over the aperture m each web M is cut away, as shown bym, to awidth and height to allow the free rising and sinking of the ring-valveW. These ringvalves are continuous annular forms of sheetiron orothermaterial,as light as consistent with proper strength. For a pump ofthirty-six inches (ninety-five centimeters) diameter of plunger, theannular apertures m may be two inches (five centimeters) wide, and thevalves W nearly four inches (ten centimeters) wide and three-eighths ofan inch (one centimeter) thick. The spaces cut out or otherwise producedin the webs M may be a little more than four inches (ten centimeters)wide and three inches (seven centimeters) high.

An elastic seat is provided both on the outer and inner edge of eachaperture m A brass double ring is formed by casting or otherwise withcross braces orbridges to hold them stiffly apart. Each is recessedonits upper face, and the recess made to receive the body of a ring ofvulcanized rubber or other elastic and suitable material, with its upperedge projecting up above the metal. The valve at each des'cent rests onthe noiseless and tight-fitting support.

In the most complete development of the invention I aid the rising orthe falling, or both, by mechanical connection s-that is to say, eachannular valve W is partly self-acting, controlled by the tendency of thewater first to open it and then to close it; but the motion thusimpelled is further insured and modified by a set of connections foraiding the lifting or droppin g, or both, these ends. I have shown suchon the upper valve, W, alone. W W are lugs joined or bolted thereon, andX X are links connected thereto by transverse pins to. The links X areconnected, by similar pins to at their tops, to arms N N extendinginward from a rocking shaft, N. The latter extends out through astuffing-box and carries an arm, N, which is operated by any suitableconnections of the working parts of the machine. (Not shown.) Thisrocking shaft and its arm outside may be similar to but longer thancorrespondin g parts for the main pump. Like those,

it may aid greatly in depressing the valve promptly to its seat justbefore the termination of the movement of the plunger, without waitingfor the current of water to be reversed and to begin to flow downward.

Modifications may be made by any good mechanic. Other materials thanthose mentioned and other dimensions may be successfully used. Onemodification I show is to dispense with the connections X and theirattachments, and to Work both the upper and the lower valves by theforce of the water alone or aided by fixed springs. O 0 represent suchsprings attached to and adapted to serve by promptly depressing thelower valve. Another important modification is to mount the valves withmore space between them, and to have links X X and connections for each.7

I esteem it important in all cases to provide such spaces m in the websM as will al low the valve to tilt to its fullest extent withoutjamming.

I claim as my invention- 1. The ring-valve W, in combination with thepump-casing M and radial webs M, havin g apertures m for the free risingand falling of the valve, and adapted to guide the valve, as hereinspecified.

2. The ring-valve W, pump-casing M, webs M notched as shown, and springsO 0, combined as specified.

3. The ring-valve W, arranged as shown, to control the annular aperturem in combination with the links X, levers N, and shaft N, as shown anddescribed.

In testimony whereof I have hereunto set my hand at Providence, RhodeIsland, this 9th day of June, 1880, in the presence of two subscribingwitnesses.

GEO. n. OORLISS.

Witnesses EDGAR PENNEY, ED. W. RAYNSFORD.

